During the credit roll of the runaway hit "Deadpool," in true Marvel style, actor Ryan Reynolds gave a teaser about who's going to be joining the cast during the sequel. This has got fans speculating and even thinking of who else could possibly join the rowdy cast.

Parent Herald took at stab at the speculating game and guessed that even if it was a joke, Kiera Knightley could possibly take the role of Cable. In the extra scenes, Reynolds said, "It can be Mel Gibson, Dolph Lundgren, Kiera Knightley? She's got range, who knows?"

Even if Cable is supposedly a male, there may be room for another unexpected twist in the upcoming sequel. As a matter of fact, it can be recalled that in the previous film, Negasonic Teenage Warhead appeared alongside Colossus. They made major tweaks to her powers, though, where instead of being psychic, she turned into an explosive teen in exchange for having Ego the Living Planet appear in "Guardians of the Galaxy Vol. 2," The Playlist reports. There could be a possibility that the switch could continue up until the second movie.

Another thing going on inside the fans' heads is the possibility of Cable bringing along a friend of his, or hers if it's really Kiera Knightley, which is Domino.

Domino is known to be a deadly mutant wielding two handguns and can even be counted on for close ranged manual combat. Aside from that, she also has a weird ability to turn luck to her side, leaving her opponent with all the bad luck in the world.

Joblo took the liberty of picking a few potential candidates for the role if she's going to be slated for the movie. The thought of Mary Elizabeth Winstead from "Kill the Messenger," it could probably be Ruby Rose from the upcoming "John Wick: Chapter 2," or perhaps Lizzy Caplan from "Now You See Me 2." The list could go on and on.

The fact that the teaser got everyone speculating means it has created enough interest for the sequel. "Deadpool 2" is initially set for release on Jan. 12, 2018.